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The '''DuMont 5XP''' is a family of flat-faced 5" CRTs with [[multi-band acceleration | multi-band post accelerators]], produced from 1948 onward. A 5XP-A series with tighter tolerances followed in 1953, and a 5XP-B range in 1954 that had an aluminized screen for higher brightness. | The '''DuMont 5XP''' is a family of flat-faced 5" CRTs with [[multi-band acceleration | multi-band post accelerators]], produced from 1948 onward. | ||
A 5XP-A series with tighter tolerances followed in 1953, and then a 5XP-B range in 1954 that had an aluminized screen for higher brightness. | |||
Compared to earlier tubes, they | Compared to earlier tubes, they have improved vertical deflection sensitivity, | ||
which was achieved by decreasing vertical deflection plate width and reducing spacing between the plates, | |||
at the cost of limiting vertical scan to as little as 1.25" (at 20 kV acceleration). | |||
Maximum post-acceleration voltage | Maximum post-acceleration voltage for the 5XP is 25.5 kV. | ||
Typical conditions are stated as -2 kV on the cathode and +12 kV on the post-acceleration anode. | |||
The 5XP was used in early models of the [[513]] and [[517]], before Tektronix switched these to Tek-made CRTs. | |||
==Links== | ==Links== |